30 
SHEEP SCAB. 
In the above table, lots 1 and 6 were dipped once, lot 11 
was not dipped at all, and all others were dipped twice. 
Each lot contained about forty sheep, except lot 11, which 
had but twenty. 
Lots 1, 2, 3, 4 and 11 were all treated alike in feed, and are 
suitable for comparison. Lot 5, unlike any of the others, was 
fed on ensilage. Lots 6 to 10 were all fed grain, but differently, 
so that they are not suitable for comparison to determine loss 
from dipping. Lots 5 to 10 are included in the table only for 
the purpose of showing whether or not the dips seemed to have 
any particular injurious or beneficial effects. 
The mid-day temperature for November 18, the first date 
of dipping, was 33 degrees, and the minimum temperatures for 
the three nights following werv? 8.8 degrees, 8.3 degrees and 
13.7 degrees respectively. 
COMPARISON OP LOTS ONE TO FOUR WITH LOT ELEVEN. 
On November 20 the dipped lots averaged just two pounds 
per sheep less than on the day before dipping, while the check 
lot in pen 11 just held their own. 
On November 23 the dipped lots averaged one and one-half 
pounds per sheep less than before dipping, while the check lot 
had made a gain of two pounds per sheep. 
On November 25 the dipped sheep had gained three-quarters 
of a pound each to a gain of two pounds each in lot 11. 
On November 27, the last weighing before the second dipping, 
the dipped sheep averaged three-quarters of a pound less than 
on the day before dipping, while the undipped lot showed neither 
gain nor loss.* 
This would indicate a loss of three-quarters of a pound per 
sheep as a result of dipping and as indicated by Aveighing nine 
days after. 
COMPARISON OP LOTS TWO, THREE AND FOUR WTTH LOT ONE. 
These four lots were as near alike in every respect as they 
could be made, including numbers. Lots 2, 3 and 4 were dipped 
December 1. The mid-day temperature was 38.5 degrees in the 
shade, and the minimum temperatures for the three nights fol- 
lowing were 13.6 degrees, 28.7 degrees and 28 degrees. 
On December 3 the dipped lots showed an average gain per 
sheep, since the last weighing, of three pounds, while lot 1 
showed a gain of five pounds per sheep. This would indicate a 
set-back of two pounds per head as the result of dipping. 
*The sudden fluctuations in weig’hts were due to sudden changes in tem- 
perature. On the night of November 25 the temperature went down to 20.3 
degrees, and on the night of November 26 it went to 11.3 degrees. 
